The inside dimensions are 4 3/8" x 4 5/8"x 5 3/8" tall. Box walls are 1/4" thick , box does not have a bottom. The cover fits as a sleeve over the top of the cardboard tissue box the opening fits nicely with the oval shape of the box.

Both Kleenex and Puff brand will fit the cube size

The inside dimensions are 4 3/4" x 9 1/2"x 4 1/4" tall. Box walls are 1/4" thick , box does not have a bottom. The cover fits as a sleeve over the top of the cardboard tissue box the opening fits nicely with the oval shape of the box.

The inside dimensions are 4 3/4" x 9 1/2"x 5 1/4" tall. Box walls are 1/4" thick , box does not have a bottom. The cover fits as a sleeve over the top of the cardboard tissue box the opening fits nicely with the oval shape of the box.

Puff family size 216 count box use front opening and folded tissue

The inside dimensions are 4 3/4" x 9 1/2"x 4 1/4" tall. Box walls are 1/4" thick , box does not have a bottom. The cover fits as a sleeve over the top of the cardboard tissue box the opening fits nicely with the oval shape of the box.

Kleenex regular 184 count box has a top opening

The inside dimensions are 4 3/4" x 9 1/2"x 5 1/4" tall. Box walls are 1/4" thick , box does not have a bottom. The cover fits as a sleeve over the top of the cardboard tissue box the oval shaped opening fits nicely with the opening in the box.

Kleenex family 230 count box has top opening

The inside dimensions are 4 3/4" x 9 1/2"x 2 7/8" tall. Box walls are 1/4" thick , box does not have a bottom. The cover fits as a sleeve over the top of the cardboard tissue box the oval shaped opening fits nicely with the opening in the box.